Sleeve puller



Patented June 16, 1953 UNITED STATES YPATENT GFFICE SLEEVE PULLERWilliam HenrylHelton, Burns, Kans. Application November 21, 1950, SerialNo. 196,789

3 Claims.

My invention is directed to improvements'y in sleeve pullers of theAimpact type. v

While the sleeve puller according to my invention is particularlyadaptable to pull or extract sleeves of internal combustion engineblocks it may? equally as well be used to pull other sleeves such asbearing mountings', racesand the like.

It is an object of the invention to provide a sleeve puller which may bepassed through. a lsleeve to be pulled from one end and engaged with thefoot or inaccessible end of the sleeve through manipulation of anoperating device extending through the body of the sleeve puller to theupper exposed and accessible l.end of the sleeve puller.

A further object of the invention is to provide in a sleeve puller anupper end of sleeve engaging plate with adjustable connecting means forconnecting it to the body of the sleeve puller in a manner so that it istightly set against the upper end of the sleeve being pulled.

`A still further object of my invention is to provide in a sleeve pulleranelongated hollow body member with a sleeve .engagingmeans at litslower end operated to engage and disengage ythe lower end of a sleeve byan operating rod l extending up through the hollow elongated'body to theupper operating end thereof together with atop of sleeve engaging platethat is adjustably mounted along the elongated hollow body member and aslidable concentrically mounted'impact member on the hollow elongatedrod which may strike against the sleeve engaging plate and a head on theupper end of the elongated hollow body member.

A still further object of my invention isto provide in a sleeve puller afoot engaging means for the bottom end of the sleeve being pulled whichhas a housing connected to the lower end of an elongated hollow bodymember that is adapted to pass through the sleeve being pulled and hasmounted in apertures inthe housing, slide members which slidesubstantially transverse to the axis of the hollow body member and arebiased to an inwardly slid position and moved to an outwardly slideposition by means of -a rod controlled wedge shaped operating memberthat engages inclined faces'on the inner ends of the slide members whenthe operatingA rod is moved axially within the elongated hollow body lgiven hereinafter; it should be understood, however, that the detaileddescription vand specific examplesare given by way of illustration onlyand, while indicating preferred embodiments of the invention, are notgiven by way of limitation, since various changes and modificationswithin the spirit and scope of the invention will become apparent tothose skilled in the art from this detailed description.

y My invention will be described inl more `detail hereinafter inconjunction with the accompanying drawings, in which:

Figure l is a side elevation of the sleeve puller in attached positionwith a 4cylinder sleeve as it is being pulled out of a cylinder blockmounting;

Figure 2 is a vertical cross section of the sleeve puller shown inFigure 1 with the sleeve being pulled and its mounting block omitted;

Figure 3 is a vertical cross sectional view similar to Figure 2` showinga modified form of mounting the top of sleeve engaging plate 'on theelongated hollow body of the sleeve puller;

and

Figure 4 is a somewhat enlarged cross sectional detail view of the lowerend of sleeve engaging foot of the sleeve puller.

The particular illustration of use of the sleeve puller according to myinvention isy in pulling a cylinder sleeve I0 mounted in a block I-I ofan internal combustion engine. Other sleeves and races as heretoforereferred to may equally as well be pulled or backed out of their seatedmounting with my sleeve puller. The upper end of the cylinder sleeve isindicated at I0 and the foot or lower end I0 which is within thecylinder block and is relatively inaccessible.

The sleeve puller is generally indicated at I2 and is inserted throughthe upper end I0' of the sleeve Ill to be pulled or backed out of theblock II. The sleeve puller is built up about an elongated hollow bodyrod I3 which is common to all figures of the drawings. The lower end ofthis rod I3 has attached a foot or bottom of sleeve engaging assemblygenerally indicated at I4 vand shown in enlarged detail in Figure 4.

This foot engaging assembly I4 comprises a hollow open ended cup-likehousing I5 having a threaded aperture I5 in its base I1 which iskthreadedly connected to the threaded lower end I 3' of, elongatedhollow rod I3. A lock nut I8 securely holds the housing I5 in positionon the endof rod I3. Housing I5 is provided with a plurality ofapertures I 9 in its wall whichv v`apertures extend substantiallytransverse to the longitudinal axis X-X' of the elongatedhollow rod I3.There is illustrated, for example, in Figure 4 the two oppositelydisposed apertures I9--I 9 within which are slidably mounted slideelements 2li-20.

The slide elements 20 are formed with a depending portion 2U and withtheir inner ends formed with outwardly and downwardly inclined faces 2lin the form of tongues which are received in cooperating inclinedgrooves 22 in a wedge member 23 having a threaded central aperture 24which is threadedly received on the lower threaded end 2l of a controlrod 28. Control rod 28 extends up through the elongated hollow rod I3where it is threaded at its upper end 29 to receive a knurled surfacedknob 30 which is held in iixed position by a lock nut 3|. tating controlrod 28 in a clockwise direction as viewed from its upper end, itsthreaded lower end 2'! screws into the internally threaded wedge element23 thus pulling the wedge 23 upward and forcing outwardly the slideelements 20-20 against biasing compression lsprings 25 seated in pockets29" in the depending portions 120 of the `slide elements and with theirouter ends pressing against the adjacent inner walls of housing vI 5.Thus, upon rotation or movement of the control 'rod in the `reverse oropposite direction, the wedge element isv moved downwardly permittingthe biasing spring elements 25 to force the slides 20 back through theiraperture mount- -ings I9 in the housing I5.

In Figures 1, 2 and 3 the slide elements are shown in extended positionwhere they will engage the sleeve to be pulled I9 as byrabutting itslower edge as shown best in Figure l. Thus, upon forcing or driving theelongated rod upward, the sleeve I D will C be carriedvonly with it andpulled out of its mounting as in the block II.

Still referring to the foot engaging means I4,

"it will be observed thatfthe foot engaging means 14 is of a sufiicientdiameter in size to fit within rthe sleeve IB.

Ytion of engagement with the sleeve I as shown in Figure l and asheretofore described.

The housing E may be fitted with a closure `'32 in the form of -acircular plate that is held in place by suitable securing screws 33threaded into the walls of housing I5.

VIn order to securely fasten the sleeve puller within the sleeve, anupper end of sleeve engaging plate 35 is provided and it has asuitablerecessed ridge 35 which engages the `upper Vend I0 of the sleeveIll. Plate V35 is apertured and threaded at its center 36 and isadjustably connected to rod I3 intermediate the rods as will bedescribed.

By rof In Figures 1 and 2 one form of adjustably connecting plate 35with rod i9 is shown. An elongated sleeve 37 is slid over hollow rod I3,concentric therewith, and has an externally threaded lower end 31 and aninternally threaded upper end 31". Center threaded aperture 36 in Vplate35is screwed onto the end 31' of sleeve 3l the threads so as to securethe proper spacing between the foot engaging means I4 and the plate 35.In the position of parts shown in Figure 'l it will be noted that thesleeve puller is secured tightly in place in sleeve I0 for the actuationof the impact hammer to be described.

Slidably mounted over sleeve 31 in Figure 2 and concentric therewith andwith elongated hollow rod I3 is a relatively heavy hammer member 39 inthe form of a cylinder with a longitudinally or axially extending centeraperture 4I) which is concentric with the elongated hollow rod axisX-X', see Figure 4. A pair of suitable operating handles 4 I-4I aresecured to the hammer .39 in opposed position and transverse to thelongitudinal axis by means of threaded stems 42 thereon which arereceived in threaded apertures 43 in the hammer member 39. 'Ihis hammermember is made of steel and is suitably hardened to withstand the impactblows as are the other partsV of my sleeve puller.

On the upper threaded lend 3T' of the hollow rod 1I 3 is threadedlysecured a head 44 in the form kof a lnut 'which is provided withsuitable `pin receiving apertures .as `at 44 in which may be inserted apinfor turning the head. This head 44 serves as an anvil as does theplate 35 against which the slidably mounted hammer 39 'may strike whenmanipulated by the operator grasping the oppositely disposed handles4I--4I thereon.

In the modified form of my invention as shown in Figure 3, there isillustrated `another adjustable connecting means for `the plate whichfits against the upper end I0 of the `sleeve to be pulled and hereldesignated plate 45.. Plate 45 has a center threaded aperture 46 .whichis received on the threaded end 41 of a slidably mounted collar 48 onelongated hollow body rod I3. Suitable tightening screws 49arethreadedly mounted in threadedside apertures in the collar 48 andwhen screwed in againstl the hollow `rod I3 hold the collar 4:8 tightlysecured thereto. Additional securing means for the collar 48 is providedin the Ylock collar 59 mounted therebelow and likewise provided withsecuring screws 5l.

rI have provided in my sleeve puller, a mechanism that is easilyattached to a sleeve to be pulled by inserting through one end thereofand securing it in the sleeve by operation of a control rod knurled knob30 to set the foot engaging means. Also from the same end of the toolthe upper end of sleeve engaging plates as at 35 and 45 may be tightlyset up against theend of the sleeve I0 being pulled. After -securing thepuller in place in the sleeve Il), then the easily operated hammer 39may be slid between the anvil, namely, plate 35 or 45 and head 44.

For sleeves of different size suitable larger or smaller foot `attachingassemblies I4 and plates 35 may be used with the same operating andmounting mechanism.

Since it is obvious that certain further changes can be made in theforegoing constructions without departing from the spirit and scope ofthis invention, it is intended that all matter shown in the accompanyingdrawings 0r described hereinbefore shall be interpreted as illustrativeand not in a limiting sense.

I claim as my invention:

1. In a sleeve puller, an elongated hollow rod having an externallythreaded portion at its upper end; a hollow housing attached to thelower end of the hollow rod .adapted to llit inside the sleeve to bepulled and having a plurality of apertures therein extendingsubstantially transverse to the axis of the hollow rod; a sleeveengaging means associated with said housing; a control rod extendingthrough said hollow rod and connected with said sleeve engaging meanswhereby actuation of said control rod causes said sleeve engaging meansassociated with the housing to engage and disengage a sleeve to bepulled; said sleeve engaging means comprising a plurality of elementsslidably mounted insaid apertures of the housing and adapted inoutwardly slid position to project beyond the connes of said housing toabut `against the end of the sleeve to be pulled, biasing means urgingthe slide elements to slide in one direction in said housing aperturesand means on the end of said control rod within the housing adapted toengage said plurality of slide elements to urge them in the oppositedirection to said biasing means action when the control rod is moved inone direction and permitting the biasing means to move said slideelements in the opposite direction; a sleeve engaging plate having athreaded aperture at its center; means to adjustably connect said plateto said hollow rod intermediate its ends whereby the plate engages theopposite to said other end of the sleeve to be pulled comprising anelongated sleeve mounted over the hollow rod and having an internallythreaded upper end in threaded engagement with said upper threaded endof the hollow rod and an externally threaded lower end for receiving theinternally threaded sleeve engaging plate, whereby said elongated sleevemay be moved along said hollow rod by its threaded engagement with thehollow rod to position said sleeve engaging plate at a selected positionintermediate the ends of the hollow rod; a head attached to the upperend of said hollow rod; and a hammer mounted concentric with said hollowrodfor sliding movement between the sleeve engaging plate and the headwhereby the hammer may strike the sleeve engaging plate and the head.

2. A sleeve puller of the character described in claim 1 wherein saidbiasing means urge the slide elements inwardly in the housing apertures,said inner endA of said slides are inclined surfaces, said slideoperating means on the lower end of the control rod is a wedge elementhaving inclined surfaces in engagement with said inner inclined endsurfaces on the slide elements whereby movement of said control rod inone direction moves said wedge element attached thereto into engagementwith said inclined ends on the slides to force the slides outwardlyagainst said biasing means while movement of the control rod in theopposite direction permits said biasing means to move said slidesinwardly.

3. In a sleeve puller, an elongated hollow rod, a sleeve engaging footmeans positioned at the lower end of said hollow rod, a control rodextending through said hollow rod and connected with said foot wherebyactuation of the control rod causes said foot means to engage and,disengage a sleeve to be pulled, a sleeve engaging plate, means toadjustably connect said plate to said hollow rod and hold the plate at aselected position thereon intermediate the ends of the hollow rodwhereby the plate engages the opposite to the foot engaging end of thesleeve to be pulled, a head attached to the upper end of said hollowrod, and a hammer mounted concentric `with said hollow rod for slidingmovement between the sleeve engaging plate and the head whereby thehammer may strike the sleeve engaging plate land the head, said hollowrod has an externally threaded portion at its upper end, said sleeveengaging plate has a threaded aperture at its center and said means toadjustably connect said sleeve engaging plate to said hollow rodintermediate its ends comprises an elongated sleeve mounted over thehollow rod and having an internally threaded upper end in threadedengagement with said upper threaded end of the hollow rod and anexternally threaded lower end for receiving the internally threadedsleeve engaging plate, whereby said elongated sleeve may be moved alongsaid hollow rod by its threaded engagement with the hollow rod toposition said sleeve engaging plate at a selected position intermediatethe ends of the hollow rod.

WILLIAM HENRY HELTON.

References Cited in the file of this patent

